Airship.



O. A. FURTAW.

' AIESHIP.

APILIOATION rum) NOV. 9, 1910.

LOW, 1 1 60 Patented Sept. 24, 1912.

6 SHEETS-SHEET 1.

c. A. FpRTAW. AIRSHIP.

APPLICATION FILED NOV. 9, 1910.

Patented Sept. 24, 1912 6 SHEETS-SHEET 2.

IHF I'] HIIHHI llLllH f] n um ate-z llllllllll I lIHlHIll 0. A. FURTAW.

AIRSHIP.

APPLICATION FILED NOV. 9, 1910.

1,39 1 1 a Pate nted Sept. 24, 1912.

6 SHEETS-SHEET 3.

awuwto'o C. A. FURTAW.

AIRSHIP.

APPLICATION FILED NOV. 9, 1910. v 1,039, ]I 1 6, Patented Sept. 24, 1912.

6 BKBETB-BHEET 4 G. A. FURTAW.

AIRSHIP.

APPLICATION FILED NOV. 9, 1910.

Patented Sept. 24, ,1912.

6 SHEETS-SHEET 5.

@w a WW. M d m C G. A. FURTAW.

AIRSHIP.

APPLICATION FILED NOV. 9, 1910.

1 39 16 Patented Sept.24, 1912.

' e SHEETS-8HEET s.

S TES ATENT OFFICE.

cnmns A. runrnw, or PHILADELPHIA, rnnnsrnvanm, nssrenon 'ro run'rnw- MoKAY monorranu COMPANY, or rnrnnnnnrnza, PENNSYLVANIA, a conrona atom or renewals.

AInsHn.

Specification of Letters Patent.

Patented Sept. 24, 1912.

Application med November 9, 1910. Serial No. 591,422.

To all whom. itma concern:

Be'it known that 1, CHARLES A. Fun'mw, a citizen ofthe'United States, residing at Philade1phia,-in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful, Improvements in Airships, of which thefollofwingis a specification. f-

My invention relates to improvements in air ships, the object, of the invention being to provide an air ship of'the monoplane type having its plane" of a- 'particu ar shape, whereby the maximum of sustaining power is had. I

A further objectis to provide a monolane having parallel vertical planes at the intermediate portion of the ship which absolutely prevents any possibility of sidewise shooting toearth.

A further object to provide an improved construction of monoplane together with an improved constrution of tail, which latter insures aself equilibrium of the machine, and which is utilized for steering in all directions.

A further object is to provide improved means for manlpulating the improved tail, whereby the machine is steered vertically or horizontally.

A further object is to provide a machine porting the latter.

of this characterwith an improved plane, which is constructed so as to cushion the shock of alighting, and do so automatically. 1

Vith these and other ob'ects in view, the invention consists-in certain novel features of construction and combinations and ar-I rangements of parts, as will be more fully section on the line l--4 of Fig. 2. Fig. 5, is I a'view in front elevation. Fig. 6, isa View 2 on an increased scale.

in transverse section on the line 66 of Fig. Fig. 7, is an end View of the tail of the device on an increased scale to that shown in Fi 2. Fig.8, is a detail perspective view il ustrating a portion of the steering mechanism. Fig. 9, is a perspective view on an enlarged scale showing in full lines the framework and controlling mechanism of the tail and tail support, and outlining in dotted lines the canvas covering on the tail, and Fig. 10, is a perspective view on an enlarged scale illustrating the forked frame 25 and the parts with which it is connected. 7

1, represents the main plane of the machine, which is strengthened by longitudinal and transverse stays 2 and 3 respectively, and b a frame 4, the rods of which are connecte to couplings 5 at the forward end of the machine, said couplings connected by transverse rods 6. The rod frame 4 together with the stays of the main plane 1 give a general triangular form to the framework as seen most clearly in Fig. 3. The transverse rod 6 acts as a journal in which brackets 7 are pivotally mounted. These 'brackets 7 support longitudinal bars 8, the forward ends of which are connected by couplings 9 with a' transverse shaft 10 on the ends of which latter wheels 11 are mounted, the ends of said shaft 10 preferably bent as shown in Fig. 5, so as to position the wheels atan andevices 12 with a plane 13, the latter pivotally lashed at its forward end to the forward end of the main plane 1 or framework sup- The rear end of this plane 13 is free to move up and down for a purpose which will hereinafter appear. A single wheel 14is supported in the rear portion of the framework, and this wheel 14 together with the wheels 11, serve to sup ort the machine as it moves over the groun One of the most important features of my invention is the shape of the main plane 1. This main plane 1 curves upwardly in the arc of a circle transversely at its central or intermediate portion, and inclines downwardly from front to rear in a general curved line as seen in Fig. 1. The side portions'15, 15, of this main plane 1 also-curve downwardly from front to rear, but flare upwardly as they project outwardly, giving a wide bearing surface of the plane on the air. This shape of the main plane is maintained by means of suitable stays and braces not necessary to describe in detail, and the general appearance looking down upon the main plane is that of a bird in flight with wings extended, the rounded intermediate portion corresponding to the body of the bird, and the side portions to the wings thereof; At the rear end of this main plane Lmy, improved tail 16 is located which is of -general triangular form in plan as illustratediin Fi 2, and is positioned between tworearwar y projecting triangular extensions 17 on the main plane This tail 16 is of a single stretch of canvas positioned on 6 strengthening ribs 18. These ribs are dis- .posed at an angle to each other, and the tail in plan is somewhat triangular but it folds on the lines 19 shown in Fig. 2, and has an intermediate raised portion 20. In other 5 words this tail when manipulated may be tilted to right or left or may .be pulled downward or upward or may be given any angle, its general function being flexibility,

I yet'being under the entire control of the preventlng any sidewise shooting to the 1 plane '1, adjacent the center of the latter, and at its lower end terminatesiin convenientoperator;

i 21, is a finwhich extendsfrom a point slightly in rear of the middle of the main plane and in line to a point about the center of the tail. This fin acts to steadythe machine in its straight flight, and also assists in earth.

' For .convenience'I have applied several reference characters, namely, 16" and 16 to '3 the two side portions of the tail 16, asthese side portions operate singly orin unison, p: and either manually or automaticallyas will -hereinafter appear.

1 A lever 22 1s plvotally connected at its upper end to the framework of the main reachof theoperatoi' upon the seat 23. This 1 lever .22 is connected by a rod 24: with a forked frame 25, the latter pivotally connected to the-center. stay of he-tail 16 by i' suitable lashing26. This frame 25 is. of.

general T-shape with rearwardly projecting arms 27, the free ends of which are connected by links 28 with the members 16 and 16 of the tail,,hence when the frame 25 is swung longitudinally, both members 16 and pulled down, while the other is elevated,

ltih-lwill. be moved vertically. When the trainees is. moved. transversely, one of the members lfiand 16 as the casemay be'is I. machine horizontal1y,'I provide flexible connecting devices 29, which connect to the ends of the frame 25, and also to a drum 30 on the lower end of. lever 22.- The drum 30 is provided with a hand wheel 31, so that'the operator may grasp this hand wheel, and by turning this hand wheel steer the machine horizontally, and by moving the lever 22 longitudinally of'the machine steer the machine vertically.

The tail which is formed as above explained, is mainly of canvas suitably stiffened and secured only to the fin 21. In other words, the canvas forming the tail has a longitudinal central opening to receive the fin, and is secured thereto. The other portions of the tail are free to move, and the longitudinal folds in the rear portion of the tail, which give it somewhat the appearance of a W in end elevation as seen in Figs. 6 and 7, allow the side portions of the tail to move with relation to the central portion.

The connect-ion between the members 16 and 16 of the tail, and the operating means, enables these members to be moved up and down together, or one up. and the other downas above explained. These members, however, are automatic in their action, because they are sensitive to the varying air currents ,or to any tendency of the machine to tilt.- For example, if one member 16 moves upwardly, the other member 16 will be drawn downwardly through the medium of the controlling mechanism. The operator, of course, must not resist this movement, but must allow the steering mechanism to move. Furthermore, such movement is immediately communicated to him.

and the operator'notes the tendency of the machine when it begins to tilt, and if the movement of the tail members is not sulficient, he can assist such movement to bring the machine to an equilibrium.

To more clearly illustrate the tail structure and its operating mechanism, attention is called particularly to Figs. 9 and 10. Fig. 9, shows in full. lines the framework of the' tail, the framework of the main portion of the machine at its rear end, and the means directly connected to the tail for manually operating the same.

While in a full sized machine these several barsmaking up the framework of the tail will be as light as is possible consistent with the necessary strength the view shows such framework on an exaggerated scale. In dotted lines, the canvas is illustrated and this canvas serves to hold the framework in proper correlation, one part with the other. To form the approximate W shape at the rear end, certain of these bars must be bent, and the side frames of the tail with the canvas thereon are secured to the fin portion by the attachment of the canvas, preferably by sewing the canvas directly to the canvas of the fin.

The frame 15 which connects to the members of the tail compels the members of the tail to move together, one side moving upwardly as the other moves downwardly,

and this is manually controlled by means of the steering mechanism above explained. As the machine moves through the air, sudden gusts of wind tilt one side of the tail, and while of course but slight movementwould be permitted if the Operator held the steering mechanism tightly, on the other hand, an experienced aviator will feel this tendency of the tail to move, and will allow it to move so as. to-automatically right itself. The automatic feature, therefore, ofthe tail is only such as is permitted by the aviator. Of course, the operation would be entirely automatic if the operator removed his hands from the steering wheel, but this is not desirable, because to do. so would lose the manual control. The operator, therefore, simply allows his hands to move in accordance with the tendency of I the hand wheel, as such movement is im- .mitted by the operator.

parted by themovement of the tail, and when the term automatic action or control is used, it is intended to mean just such automatic equilibrium or control as is per- Therefore, while the operator could prevent any automatic control if he does not resist it, the tail will move in the air so as to maintain its equilibrium in ordinary gusts of wind.

I In the upper portion of the framework at the forward end, the engine 32 is mounted and'drives the propeller 33. to propel the machine through the air.

While the general shape of the main iplane has a tendency to prevent sidewise shooting to earth, to absolutely prevent any possibility of such movement, longitudinally .disposed vertical planes 34 extend from the intermediate portions of the main plane, are of general triangular form, and at their angles and lowerend are secured to the framework 4. These planes 34 not only prevent sidewise tilting to earth, but also stabilize the machine, giving an extendedsupporting area to the ship when tilted, and compelling the ship to right itself even in treacherous wind. The operation is as. follows:

peller 33 will'draw the machine over the ground, the latter running on the wheels 11 j and 14. At the proper time, the operator 10th members 16 and 16 of the tail, which will cause the main plane 1 to take the air and rise to the desiredheight, when the operatormoves lever 22 rearwardly causing the tail levers to lift andby this means maini at? the desired, elevation. 4

)ushes the lever 22 forwardly'so as to depress tains the ship Should he desire to descend, he draws the lever 22 toward .him' elevating the levers- 16 and 16 when the machine will gradually descend. To steer the machine to right or left, the aviator turnsthe hand wheel 31 and draws down .one member 16" or 16', and elevates the other. If he wishes to go the particular shape of the main Engine 32' isfitarted, and the rapid turning of the proto the right, he depresses the ri ht hand section 16, and elevates *the left and section 16 causin the machine to swing in the arc of a circi to the right. By the turning of the hand Wheel in the opposite direction will cause the left hand section 16 to be depressed, and the right hand section 16 to be elevated, causing the machine to swing in the arc of. a circle to the left. The vertical planes 34 and the fin 21, together with plane 1, render the machine self stabilizing, 1n other words, a current of air in any direction will find its resistance against one or more of the planes above referred to, so thatthe machine always has a full bearing on the air, and always tends to right itself. The tail construction is such that a sudden last of air may shift the position of the tail to compel the machine to maintain its horizontal or approximate horizontal withoutdestroying its effectiveness from a manually operated stand point. When the machine alights, the contact of wheels 11 with the ound draws downwardly the rear ends of t e bars 8, causing the plane 12 to be moved downwardly, cushioning-the shock of contacting with the ground, and acting as a brake to bring the machine to a stop in a reasonable short distance. If desired, the aviator may press the rear ends of bars 8 against the ground to act as a brake, and bring the machine to a quick stop.

I would-have it understood that the particular. manner of forming the several planes, the arrangement of stays and braces, and other structural features for strength which economize weight are not material to the present invention, and the invention is therefore not limited thereto. Also various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider mysclfat liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent is;

1. An air ship comprising a main plane, a tail at the rear central port-ion of said main lane comprisingtwo vertically movable slde sections, and a longitudinally positioned Vertical web between said side sections, substantially as described.

2. An air ship comprising a main plane, a' tail at the rear central port-ion of said main planecomprising two vertically movable side sections, 'a longitudinally positioned vertical web between said side sections, and means for moving said wing sections in the same direction and in opposite directions, substantially as described.

- 3. An airship of the monoplane type comprising a main plane of greater length than breadth and when at rest on the ground in- (dining downwardly from frontto rear,

curved transversely in cross section at its intermediate portion, and at its sides flared outwardlyand upwardly, avtail at the rear central portion of said plane, said tail folded longitudinally com-prising two side sections 1 capable of opposite vertical movement, substantially as described.

4. An airship, comprising a main plane of greater length than breadth and when at rest on the ground inclining downwardly from front to rear, curved transversely at its intermediate portion and flaring. outwardly and upwardly at botli sides of said curved portion, triangular extensions at the ends of said plane and a triangular tail supgo ported between said extensions, substantially as described.

5. An airship,'coniprising a mainplane inclining downwardly from front to rear, curycd transversely at its intermediate portion and flaringoutwardly and upwardly at both sides of said curved portion, triangular extensions at the ends of. said plane, and a triangular tail supported between said extensions, said tail folded at two points longitudinally, and both side members of said tail moved vertically, substantially as described. 7

6. An airship, comprising a main plane inclining downwardly from front to rear,

curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved port-1on,'triangular extensions at the ends of said plane, and a triangular tail supported between said extensions, said tail folded at two points lon 'tudinally, and both side members of sai tail moved vertically, and means for moving said tail sections vertically, substantially as described;

7. An airship, comprising a main plane inclining downwardly from front to rear, curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved .portion, trlanguso lar extensions at the ends of said plane, and

a triangular tail supported betweensaid extensions, said tail folded at two points longitudinallv, and both side members of sald tail moved vertically, and means for moving vertically the' tail .sections independently and simultaneously, substantially as de- 8. In an air ship, the combination with a main plane inclining downwardly from front to rear, of atail at the rear end of said plane folded at two points longitudinally, whereby the said sectionsare capable of independent movement, a pivoted lever, a pivoted frame connected with the tail sections, and a rod connecting said lever with oted frame connected wlth the tail sections, i

a rod connecting said lever with said frame, whereby said tail sections are moved simultaneously in the same direction, a drum on said lever, and flexible connecting devices between said drum and said frame, whereby said tail sections may be moved in opposite directions, substantially as. described.

10. An airship, comprising a main lane' of greater length than breadth inclining downwardly from vfront to rear, curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved portion, triangular extensions at the ends of said plane, a triangular tail supported between said extensions, and vertical longitudinal parallel planes extending downward from the main plane, substantially as described. 11. An airship, comprising a main plane of greater length than breadth inchmng downwardly from front to rear, curved transversely at its intermediate p rtion and flaring outwardly and upward y at bothsides of said curved portion, triangular extensions at; the ends of said plane, a triangular tail supported between said extensions,

said tail folded at two points longitudinally, and both side members of said tail moved vertically, and vertical longitudinal parallel planes extending downward from the I main plane, substantially as described. 12. An airship, comprising a main plane of greater length than breadth inclining downwardly from front to rear, curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved portion, triangular extensions at the ends of said plane, a triangular tail supported between said extensions, said tail folded at two points longi- 5 tudinally, and both side members of said tail moved vertically, means for moving said tail sections vertically, and vertical longitudinal parallel planes extendin downward from the main plane, substantially as described.

13. An airship, comprising a mainplane of greater length than breadth inclining downwardly from front to rear, curved transversely at its intermediate ortion and flaring outwardly and upwar y at both sides of said curved portion, triangular extensions at the ends of said plane, a triangular tail su rted between said extensions, said tail fol ed at two points longitudinally,

and both side members of said tail moved vertically, means for moving vertically the tail sections independently and simultane ously, and vertical longitudinal parallel planes extending downward from the main 7 plane, substantially as described. v

e 14. In an air ship, the combination with a main plane of greater length than breadth inclining downwardly from front to rear, of a tail at the rear end of said plane folded at two points longitudinally, whereby the said sect-ions are capable of independent said sections are capable of independent movement, a pivoted lever, a pivot-ed frame connected with the tail sections, a rod connecting said lever with said frame, whereby said tail sections are moved simultaneously in the Same direction, a drum on said lever,

flexible connecting devices between said drum and said frame, whereby said tail sections may be moved in opposite directions, and vertical longitudinal parallel planes extending downward from the main plane, substantially as described.

16. An airship of the monoplane type comprising a main plane, inclining downwardly from front to rear, curved transversely in cross section at its intermediateportion and at its sides flared outwardly and upwardly, a pivoted frame, rollers on said pivoted frame, a plane connected at its forward end to the forward end of the main plane, and devices corfnecting said pivoted frame with said last-mentioned plane, whereby the pivotal movement .of said frame causes a pivotal movement of said pivoted plane againstthe pressure of the latter; on the air, substantially as de-' scribed;

17. An airship of the monoplane type, comprising a main plane, inclining downwardly from front to rear, curved transversely in cross section at its intermediate portion, and at its sides flared outwardly and upwardly, afltail at the rear central portion of said plane, a pivoted frame, roll- ,ers on said pivoted frame, alane'conne'cted at its forward end to the? orward'end, of the main. lane, and-devices connecting said pivoted ame" with said last-mentioned plane, whereby the pivotal movement' of. saidvframe causes a plvotal movement of,

said pivoted plane against the pressure of the "latter on the air, substantially as described. r

{ 18, An airship of the monoplane type,

comprising a main plane, inclining downwardly from front to rear, curved transversely in cross section at its intermediate portion, and at its sides flared outwardly and upwardly, a tail at the rear central portion of said plane, said tail foldedlongitudinally comprising two side sect-ions capable of opposite vertical movement, a

pivoted frame, rollers on said pivoted frame,

a plane connected at its forward rend to the forward end of the main plane, devices connecting said pivoted frame with said lastmentioned plane, whereby the pivotalmove ment of said frame causes a pivotal move ment of said pivoted plane against the pressure of the latter on the air, a longitudinally extending fin projecting from a point intermediate of the endsiof the main plane to a point intermediate of the ends of the tail,

and having its upper edge in a normal horizontal line substantially as described.

19. An airship, comprising a main plane inclining downwardly fromfront to rear, curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved ortion, triangular extensions at the ends of said plane, a triangular tail supported between said extensions, a pivoted frame, rollers on said pivoted frame, a plane connected at its forward end to the forward end ofthe main plane, devices connectin saidpivoted frame with said last-mentione plane, whereby. the

pivotalmovement of said frame causesa pivotal movement of said pivotedv plane against the pressure of the latter 6n the air,

a longitudinally extending fin projecting from a point intermediate of the ends of the main plane to a point intermediate of the ends of the tail, and having its upperedge in a normal horizontal tially as described. c

- 20. An air ship,'comprising a mam plane e, substaninclining downwardly from front to rear, curved transversely at its intermediate por-' ti'on and flaring outwardly and upwardly at both sides of said curved portion, trlangular extensions at the ends of-said plane,

a triangular tail supported between said,

extensions, said tail folded at two points longitudinally, and both side members of said tail moved verticall a pivoted frame, rollers on said pivotedrmm, a plane connected at its forward end to the forward end of the main plane, devices connecting said pivoted frame withsaid last-mentioned plane, whereby the pivotal movement of said frame causes a pivotal .movement. of

said pivoted plane against the pressureof'.

the latter on the-air, a longitudinally ex- ,tending fin projecting from a point intercurved transversely at its intermediate por-. tion and flaring outwardly and upwardly at 1 both sides of said curved portion. triangular 10 extensions at the ends of said plane, a triangular tail sup orted between saidextensions, said tail f dlded at two oint-s longit-udinally, and both side mem ers of said" tail moved vertically, means for moving said tail sections vertically, a pivoted frame, rollers on said pivoted frame, a plane connected at its forward end to the forward end of the main plane, devices connectingsaid pivoted frame with said last-men-T tioned ment 0 fplane, whereby the pivotal movesaid frame causes a pivotal move-g ment of 'said pivoted plane against the pressure of the latter on the air, a longi tudinally extending fin projecting from a;

point intermediateof theends of the mainf plane to a point intermediate of the ends of the tail, and having its upper edge in a normal horizontal line, substantially as described.

22. An airship, doinprising a main pla'nef inclining downwardy from front to rear,';

cnrved transverselyat its intermediate portlon and flarin outwardly and upwardly at both sides 0 said curved port-ion, trian-g gular extensions at the ends ofsaid planef;

a triangular tail. supported between said ex-i tensions, said tail folded at two oints longitudinally, and both side mem ers of said;

tail moved vertically, means for moving vertically the tail sections independently; and simultaneousl ,a pivoted frame, rollers on said pivoted ame, a plane connected at its forward end to the forward end of; the main plane, devices connectmg said;

7 sai pivoted frame with said las't-mentionedi plane, whereby the pivotal movement ofi said frame causes afpivdtal movement of pivoted plane against the ressure of; the latter on the air, a longitu inally ex-E tending rojecting, from a point inter-i mediate of t e ends of the main lane to a point intermedlate of the [ends of'the tail,,'

and having its upper edge in a "normal'horizontal line, substantially as described.

main plane inclining downwardly fromi front to rear, of a tail at the rear end of? ble of independent movement, a "pivoted;

lever, a pivoted frame connected with the; -tail s'ect-ions, a rod connecting said lever; with-said frame, whereby, said tail sectionsj 7,1 are-moved simultaneously the same direc- 5 tion, a pivoted frame, rollers on said pivoted wardly from frontto rear, curve trans- 130 otal movement of said frame causes a piv otal movement of said pivoted plane against the pressure of the latter on. the air, a longi- 'tudinally extending fin projecting from a point intermediate of the ends of the main plane to a point intermediate of the ends of the tail, and having its uppel edge in .a nor-- mal horizontal line, substantially as described.

2 1 In an airship, the combination with a main plane inclining downwardly from front to rear, of a tail at the rear end of said plane folded at two points longidinally, whereby the said sections are cap ble of independent movement, a pivoted lever, a pivoted frame connected with the tail sections, a rod connecting said lever with said frame, whereby said tail sections are moved simultaneously in the same direction, a drum on said lever, flexible connecting devices between said drum and "said frame; whereby said tail sections mav bc-moved in opposite directions, a pivoted frame, rollers on said pivoted frame, a plane c nnected at l its forward end to the forward end of the main plane, devices connecting said pivoted frame-with said last-mentioned plane, whereby the pivotal movement of said frame causes a pivotal movement of said pivoted plane against the pressure of the latter on the air, a longitudinally extending fin projecting from a point intermediate of the ends of the main 4 lane to a point intermediate of the ends of t e tail, and having its upper edge in a normal horizontal line, substantially as descr-ibed.-

25. An airship, of the monoplane type, comprising a main plane, inclining downwardly from front to rear, curved transversely in cross section at its intermediate portion, and at its sides flared outwardly and upwardly, a tail at the rear central por-, tion of said'plane, vertical longitudinal parallel planes extending downward from the .main plane, a pivoted frame, rollers on said pivoted frame, a plane connected at its for- 1'15 ward end to the forward end of the main plane, devices connectin said pivoted frame with said last-mentions plane, whereby the i f pivotal movement of said frame causes a 23. In an a1rsh1 p, the-combinat1on with ai pivotal movement of said pivoted plane against the pressure of the latter on the air, a longitudinally extending fin projecting from a point intermediate of the ends of the main plane to a point intennediate of-the ends of the tail, and having its upper edge in a normally horizontal line, substantially as described. Y

26. An airship ofv the inonoplane type, comprising a main plane, inclin'in downinsane versely in cross section at its intermediate portion, and at its sides flared outwardly and unwardlv, a tan at the rear central portion of said plane, saidtail folded longitudinally comprising two side sections .capable' of opposite vertical movement, vertical lon-" gitudinal parallel planes extending downextensions at the ends of said plane,-ia tri ward from the .main plane, a pivoted frame, rollers on. said pivoted frame, aplane connected at its forward to the forward end of the main plane, .devices, connecting said pivoted frame with said last-mentioned plane, whereby the pivotal movement of said frame causes a pivotal movement of said pivoted. plane against the pressure of the latter on the air, a longitudinally extending fin projecting from a point intermediate of the ends of the "main plane to a point intermediate of .the ends of the tail, and having its upper edge in a normal horizontal line, substantiallyas described.-

27. An airship, comprising a-main "plane inclining downwardly from front to rear, curved transversely at its intermediate portion and flaring outwardly and upwardly at both sides of said curved portionftriangular angular: tail supported between said extensions, vertical longitudinal parallel planes extending downward from the main plane, a pivoted frame, rollers on sai i pivotedframe,

a plane connected at its forward end to the forward end of the main plane, devices con necting said pivoted frame with said lastmentioned plane, whereby the pivotal movement of said frame causes a pivotal movement ofsaid pivoted plane against the pres-' sure-of the latter on the air, a longitudinally extending fin projecting from a point intermediate of the ends of the main plane to a point intermediate of the ends of the tail, and having its upper edge in a normal horizontal line, substantially as described 28. An airship,'comprising a main plane inclining downwardly from front to rear,

curved-transversely at its intermediate portion and flaring outwardly and upwardly at both sides of saidcurved port-ion, triangular extensions-at thevends of said plane, a triangular tail supported between said extensions, said tail folded at two points longitudinally, and both side members of said tail moved vertically, vertical longitudinal parallel planes extending downward. from the main plane, a. pivoted frame, rollers on said pivoted frame, a plane connected at-lts ,for-

ward end tothe forward endofthe main plane, devices connecting'said pivoted frame with said last-mentioned plane-whereby the pivotal movement. of said frame causes a pivotal movement of, said] pivoted plane against thep'ressur'eof the latter on the air,

alongitudinally extending fin projectin from a point intermediateof theends ofthe" main plane to a point'intermediateofthe from a point'intermediate of the ends of the ends of the tail, and having its-upper edge in a normal hnrizonta-l line, substantially as described, I v

29. An inclining downwardlv from frontto rear,

airship, comprising a main. plane L curved transversely at its intermediate por tion and flaring outwardly and upwardly at bot-h sidesof said curved portion, triangular extensions at the ends of said plane, a triangular tail supported between said ex tensions, said tail folded attwo" points lonta'il 'mov'ed vertio-illv, means fc-rmoving said giituclinal ly,'- and both'side members ofsaid tail sections verticallvz vertical longitudinal H parallel planes extending downward from the mainplane, a pivoted frame, rollerspn said pivoted frame, a plane connected at ts forward end to't'he forward end of the mam plane, devices connecting said pivoted frame withs'aid last-mentioned plane, whereby the pivotal movement of said frame causes a pivotal movement of said pivoted planeagainstjthe pressure of the latter on the air,

a longitudinally extending fin projecting i main plane to a point intermediate of the .endsof the tail, and havingits upper edge in anormal horizontal line, substantially as described.

30.--An airship, comprisinga main plane inclining downwardly from front to rear,

"curved transversely at its intermediate portion ,and flaring outwardly and upwardly at both sides of said curved portion, triangular extensions at the ends of. said plane, a

triangular tail supported between said extensions, said tail folded .at two points longitudinally, and both side members of said tail moved vertically, means for mov-- ing vertically the tail sections independently and simultaneously, vertical longitudinal parallel planes extending downward from themain plane, a pivoted frame, rollers, on

said pivoted frame, a plane-connected at its front to rear, of a tail at the rear end of said plane 1 folded at. twofpoints longitudinally,

independent'movement,-a ivoted lever, a

a main plane, inclining. downwardly fr0m whei-eby the said sections are capable of pivotedframe "connectedwith-thetail sections, a. rod connectingsaid lever with said. frame-, whereby said-ta l sect ons are moved I -ho izontal. line, substantiall simultaneously in'th e' same direction, verti 'cal' longitudinal parallel planes extendin of said pivoted plane against the pressure 'ofthe latter on the air, a longitudinally extending fin projecting from a point intermediate of the ends of the main plane to a point intermediate of, the ends of the tail, and having its upper edge in a normal as described.

' 2. In an airship, the com ination with a main plane inclming downwardly from front to rear, of a tail at the rear end of said plane folded at two points longitudinally. whereby the said sections are capable of independent movement, a pivoted lever, a pivoted frame connected wlth the tail sec tions, 2, rod connecting said lever with saidframe, whereby said tail sections are moved simultaneously the same direction, a-

vices between said drum and said frame,

whereby said tail sections may be moved in opposite directions, vertical longitudinal parallel planes extending downward from drum on said lever, flexible connecting dethe main planes, a pivoted frame, rollers on said pivoted frame, a plane connected at its forward end to the forward end of the main plane, devices connecting sald/pivoted frame with said last-mentloned plane,

whereby the pivotal movement of said frame causes a pivotal movement of said pivoted plane against the pressure. of the latter on the air, a longitudinally extendlng fin projecting from a point intermediate o the ends of the main plane to a point me termediate of the ends of the t'aiLandhav:

ingits upper edge in a'normal horizontal P. H. KRENKEL, CHAS. E. 'Po'rrs. 

